CN111725286A - Display module and electronic equipment - Google Patents

Display module and electronic equipment Download PDF

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CN111725286A
CN111725286A CN202010614917.6A CN202010614917A CN111725286A CN 111725286 A CN111725286 A CN 111725286A CN 202010614917 A CN202010614917 A CN 202010614917A CN 111725286 A CN111725286 A CN 111725286A
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phase
display module
phase plate
adjustment unit
light
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CN111725286B (en
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沈星
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Wuhan Tianma Microelectronics Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
    • H01L27/144—Devices controlled by radiation
    • H01L27/146—Imager structures
    • H01L27/14601—Structural or functional details thereof
    • H01L27/1462—Coatings
    • H01L27/14623—Optical shielding
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements

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Abstract

The invention provides a display module and electronic equipment, wherein the display module comprises a first phase plate, a second phase plate and a shading part, the first phase plate comprises a plurality of first phase adjusting units, the second phase plate comprises a plurality of second phase adjusting units corresponding to the first phase adjusting units, and the shading part is arranged between the first phase adjusting units and the second phase adjusting units. In addition, the sum of the topological load of the first phase adjustment unit and the topological load of the second phase adjustment unit corresponding to the first phase adjustment unit is zero. Therefore, the display module provided by the invention firstly converts the light beam into the light beam with the cavity through the first phase plate, then converts the light beam with the cavity into the original light beam through the second phase plate after the light beam with the cavity passes through the light shielding part, and applies the original light beam to devices such as a camera, so that the display effect of the display panel is improved, and the imaging quality of the camera can be improved.

Description

Display module and electronic equipment
Technical Field
The invention relates to the technical field of display, in particular to a display module and electronic equipment.
Background
With the gradual development of electronic devices, a high screen ratio is a great development trend of display panels, which gradually compresses the occupied space of some devices on the display screen, such as a front camera, a fingerprint identification module, and the like. Based on this, the underscreen fingerprint and the underscreen camera are generated at the same time.
At present, the conventional camera under the screen divides the display screen into a first display area and a second display area, wherein the second display area is provided with the camera under the screen, and the problem that the second display area has sparse pixel arrangement and poor display effect can occur in the mode. Besides, the pixels can shade the light, so that the light field information is partially lost, the diffraction phenomenon occurs, and the imaging quality of the camera is poor.
Therefore, how to provide a display module and an electronic device that can improve the display effect of the display panel and the imaging quality of the camera is a great technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the invention provides a display module and an electronic device, which can improve the display effect of a display panel and the imaging quality of a camera.
In order to achieve the purpose, the invention provides the following technical scheme:
a display module, comprising: a first phase plate including a plurality of first phase adjustment units, a second phase plate including a plurality of second phase adjustment units provided corresponding to the first phase adjustment units, and a light shielding member provided between the first phase adjustment units and the second phase adjustment units,
the topological load of the first phase adjustment unit and the topological load of the second phase adjustment unit are both not zero, and the sum of the topological load of the first phase adjustment unit and the topological load of the second phase adjustment unit corresponding to the first phase adjustment unit is zero.
An electronic device includes any one of the above display modules.
Compared with the related art, the technical scheme provided by the invention has the following advantages:
the invention provides a display module and electronic equipment, wherein the display module comprises a first phase plate, a second phase plate and a shading part, the first phase plate comprises a plurality of first phase adjusting units, the second phase plate comprises a plurality of second phase adjusting units corresponding to the first phase adjusting units, and the shading part is arranged between the first phase adjusting units and the second phase adjusting units. In addition, in the display module, the topological load of the first phase adjustment unit and the topological load of the second phase adjustment unit are both not zero, and the sum of the topological load of the first phase adjustment unit and the topological load of the second phase adjustment unit corresponding to the first phase adjustment unit is zero. Therefore, the display module provided by the invention can convert the light beam into the light beam with the cavity through the first phase plate, then convert the light beam with the cavity into the original light beam through the second phase plate after the light beam with the cavity passes through the light shielding part, and apply the original light beam to devices such as the camera, namely, in the display module, the light transmission can be realized without increasing the distance between adjacent pixels.
Drawings
In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic top view of a related under-screen camera;
fig. 2 is a cross-sectional view of a related under-screen camera;
fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a cavity and a halo formed by a light beam in a display module according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a display module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first phase plate in a display module according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first phase plate in a display module according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a first phase plate in a display module according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a first phase plate in a display module according to an embodiment of the present invention;
FIG. 10 is a schematic view of a cavity and halo formed by a light beam in a display module according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display module according to an embodiment of the disclosure;
fig. 13 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a display module according to an embodiment of the disclosure;
fig. 16 is a schematic structural diagram of a pixel in a display module according to an embodiment of the present invention;
fig. 17 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
As described in the background, the related under-screen camera is shown in fig. 1 and fig. 2, where fig. 1 is a top view of a display panel of the related under-screen camera, and fig. 2 is a partial sectional view of fig. 1, and the display screen is divided into a first display area 101 and a second display area 102, where the second display area is provided with the under-screen camera. The inventor finds that, because the camera needs higher light transmittance, in order to further improve the imaging quality of the under-screen camera, the distance between adjacent pixels in the second display region is generally set to be larger to increase the light transmission area of the second display region, for example, the distance d1 between adjacent pixels in the second display region is larger than the distance d2 between adjacent pixels in the first display region in fig. 1, which may cause the PPI of the pixels in the second display region to be lower than that of the pixels in the first display region, and thus, the pixels in the second display region are sparsely arranged and have poor display effect.
In addition, as shown in fig. 2, the pixels can block light, so that the light field information is partially lost, and a diffraction phenomenon occurs, resulting in poor imaging quality of the camera. For example, the incident ray a1 becomes the incident ray a2 after being blocked by the pixel, and the incident ray a2 loses at least a portion of the incident ray A3 compared to the incident ray a 1. Because the camera is a photosensitive element, compared with the condition that the light is sufficient, the camera has poorer shooting quality when the light is damaged.
Accordingly, an embodiment of the present invention provides a display module to overcome the above problems in the related art, including: the liquid crystal display device includes a first phase plate, a second phase plate, and a light shielding member.
Wherein the first phase plate comprises a plurality of first phase adjusting units, the second phase plate comprises a plurality of second phase adjusting units corresponding to the first phase adjusting units, the light shielding member is arranged between the first phase adjusting units and the second phase adjusting units,
the topological load of the first phase adjustment unit and the topological load of the second phase adjustment unit are both not zero, and the sum of the topological load of the first phase adjustment unit and the topological load of the second phase adjustment unit corresponding to the first phase adjustment unit is zero.
The embodiment of the invention also provides electronic equipment comprising any one of the display modules.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the above is the core idea of the present invention, and the above objects, features and advantages of the present invention can be more clearly understood.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present invention, the display module includes: a first phase plate 31, a second phase plate 32, and a light shielding member 33.
The first phase plate 31 includes a plurality of first phase adjusting units 311. The second phase plate 32 includes a plurality of second phase adjusting units 321 provided corresponding to the first phase adjusting units 311. In the present embodiment, a light shielding member 33 is disposed between the first phase adjustment unit 311 and the second phase adjustment unit 321.
Specifically, in the present embodiment, the light shielding member 33 is any member that shields the light beam, for example, the light shielding member may be one or more members, such as an anode, a trace, and the like, in any color of pixels in the array substrate.
In this embodiment, neither the topological charge of the first phase adjustment unit 311 nor the topological charge of the second phase adjustment unit 321 is zero, and the sum of the topological charge of the first phase adjustment unit 311 and the topological charge of the second phase adjustment unit 321 corresponding to the first phase adjustment unit is zero. For example, the topological charge of the first phase plate is + L, and the topological charge of the second phase plate is-L, or for example, the topological charge of the first phase plate is +2L, and the topological charge of the second phase plate is-2L.
Specifically, the phase plate is a component of an optical system in which a film layer having a certain thickness and refractive index is coated on a partial region (generally, an annular zone) on a glass plate or a lens, and is capable of advancing or retarding the phase of light transmitted through the region compared with light passing through a non-coated region, thereby forming a light beam having a hollow 41 at the center, as shown in fig. 4. Thus, the embodiments of the present invention introduce eilθThe spiral phase factor enables the light field to acquire angular momentum attributes, the number of angular quanta is l, and a cavity is immediately evolved through the center of the light beam of the phase plate, wherein the size of the cavity is related to the absolute value of topological charge l of the intrinsic attributes of the phase plate, so that the display module provided by the embodiment of the invention can enable the light beam to form the cavity firstly by utilizing the combination of the phase plates (the first phase plate and the second phase plate) with opposite topological charges, and the light beam is restored into an original light field after bypassing the light shielding component, as shown in fig. 5. For example, the beam first passes through a first phase plate of + L to form a vortex light with a void in the middle, and then passes throughAnd restoring the second phase shift with topological load of-L into an original optical field, wherein the hollow hole formed by the centers of the phase plates with different topological loads has different proportions.
Please refer to fig. 6, fig. 6 is a schematic structural diagram illustrating a structure of changing a thickness of a phase plate to change a topological load of the phase plate, specifically, setting a rotation angle of the phase plate to be θ, such that a height of the phase plate corresponding to each angle is
Figure BDA0002563409600000051
Wherein d is0Is the initial thickness of the phase plate, dsThe highest thickness of the phase plate. Phase change corresponding to each angle
Figure BDA0002563409600000052
Wherein,
Figure BDA0002563409600000053
is the phase variation corresponding to the phase plate rotation theta, lambda is the wavelength of the incident light to the phase plate, n0Is the refractive index of air, n is the refractive index of the phase plate, the change of the phase corresponding to one period of phase plate rotation is
Figure BDA0002563409600000054
Wherein,
Figure BDA0002563409600000055
the topological charge of the phase plate determines the size of the central hole of the beam converted by the phase plate. Load topology
Figure BDA0002563409600000056
Substituting the phase change formula to obtain the current phase of the phase plate
Figure BDA0002563409600000057
Further result in
Figure BDA0002563409600000061
Where r is the radial distribution of light and i is lightIn imaginary units, it can be seen that the thickness of the phase plate can vary with the angle.
In addition, referring to fig. 7, fig. 7 is a schematic structural diagram illustrating a structure of changing a refractive index of a phase plate to change a topological charge of the phase plate, specifically, if a rotation angle of the phase plate is set to θ, a refractive index corresponding to each angle is set to θ
Figure BDA0002563409600000062
Wherein n is0Is the initial refractive index of the phase plate, nsThe maximum refractive index of the phase plate. The phase change corresponding to each angle is
Figure BDA0002563409600000063
Wherein λ is the wavelength of the incident light incident on the phase plate, d is the thickness of the phase plate, and the variation of the phase corresponding to one period of rotation of the phase plate is
Figure BDA0002563409600000064
Wherein,
Figure BDA0002563409600000065
the topological charge of the phase plate determines the size of the central hole of the beam converted by the phase plate. Load topology
Figure BDA0002563409600000066
Substituting the phase change formula to obtain the current phase of the phase plate
Figure BDA0002563409600000067
Further result in
Figure BDA0002563409600000068
Where r is the radial distribution of light and i is the imaginary unit of light, it can be seen that the refractive index of the phase plate can vary with angle.
Schematically, taking the way of changing the thickness of the phase plate to change the topological charge of the phase plate as an example, such a phase plate is usually called a spiral phase plate, also called a helical phase plateIs a vortex phase plate whose optical thickness is proportional to the rotation of the azimuth angle, and is a phase type diffraction element. In conjunction with fig. 8 and 9, they can be classified into two types according to the surface structure: the continuous surface spiral phase plate and the step type spiral phase plate are both of spiral rising structures. For both types, in the present embodiment, the height d is definedsThe height from the lowest plane to the highest point of the substrate surface.
Specifically, taking a step-type spiral phase plate as an example, the surface structure is shown in fig. 9, which presents a "spiral step" structure, and the design of the "step" structure from bottom to top is based on the function of the wavelength and optical index of the incident light beam (e.g., laser). When an incident light beam passes through the spiral phase plate, the spiral phase plate surface structure makes the change amount of the optical path of the transmitted light beam different, namely the change amount of the phase of the transmitted light beam is also different, so that the vortex rotation is generated.
The three main parameters of the helical phase plate are wavelength, topological loading and accuracy. Where wavelength refers to the design wavelength of the helical phase plate. The english name for Topological Charge is topologic Charge, which refers to the number of 2 pi cycles ("steps") etched in a 360 degree rotation around the diffractive surface, i.e. the number of turns of the optical phase twist after the incident beam (e.g. laser) has passed through the spiral phase plate, generally denoted by l, where l is an integer and the sign depends on the direction of the optical twist. For example, a topological charge of 1 indicates a 360 ° phase change of the output beam of 2 π, and a topological charge of 3 indicates a phase change of the output vortex rotation of 6 π.
In this embodiment, the material of the spiral phase plate can be fused silica, zinc selenide, germanium and plastic, the wavelength range is 193-10600 nm, the steps are usually set to be 2 steps-16 steps, and the height d of the phase plates0-150 mm, and the number of topological charges is 1-12.
Accordingly, if the main parameters of a helical phase plate are given, the height of the phase plate is h ═ l λ/Δ n, where l is the topological charge, λ is the wavelength of the incident light, and Δ n is the refractive index difference between the helical phase plate and the surrounding material.
For example, suppose a light beam (e.g., seeLaser) wavelength is 800nm, topological charge is 1, and the spiral phase plate material is quartz, then the refractive index table of quartz is first consulted to obtain the exact refractive index of 1.45337 for quartz at 800nm, and the refractive index of air is 1.00028. The height d of the phase plate is obtained from the above formulasThe spiral phase plate has a height of 1.7656um, i.e., 1 × 800nm/(1.45337-1.00028) ═ 1.7656 um.
On the premise that the thickness of the phase plate is fixed, the size of the cavity and the size of the halo of the light beam converted by the first phase plate can be further adjusted by changing the size of the topological charge l in the embodiment of the present invention, specifically, as shown in fig. 10, the size of the cavity is d3, and the size of the halo is d 4.
In summary, the display module provided by the present invention first converts the light beam into the light beam with the cavity through the first phase plate, and then converts the light beam with the cavity into the original light beam through the second phase plate after the light beam with the cavity passes through the light shielding part, and the original light beam is applied to the devices such as the camera, i.e. in the display module, the light transmission can be realized without increasing the distance between adjacent pixels.
In addition to the above embodiments, as shown in fig. 11, in order to further reduce the light loss of the light beam converted by the first phase plate, in the present embodiment, the size of the hollow space of the light beam converted by the first phase plate is adjusted so that the hollow space 111 formed by the light beam converted by the first phase plate does not overlap with the light shielding member 112 when passing through the light shielding member.
It is worth mentioning that, in this embodiment, owing to set up first phase place board and second phase place board, carry out transmission after converting through the phase place board to the light beam, when the shading part is the pixel on the array substrate, the mode of arranging of this pixel can be the same with the mode of arranging of other pixels of display area, can be with need not to enlarge the interval between the pixel that corresponds with the position of camera under the screen, can realize the conduction to light, and then improved imaging quality when having improved display effect.
In addition, as shown in fig. 12, the display module according to the embodiment of the present invention may further include: and a shaping lens 121 disposed between the first phase adjusting unit and the light blocking member, for adjusting a cavity boundary and a halo boundary of the light beam converted by the first phase adjusting unit.
Specifically, when the thickness and the refractive index of the first phase plate are fixed, the hole boundary of the light beam passing through the first phase plate is also fixed, and generally, when the hole boundary is larger than the size of the light shielding component, the topological charge needs to be set to be larger, for example, the topological charge is larger than 4, and the thickness of the display panel tends to be in a development trend of being light and thin.
It should be noted that, in this embodiment, according to different materials of the shaping lens, the halo boundary may be reduced while the cavity boundary is expanded, or the halo boundary may be expanded while the cavity boundary is reduced, or the halo boundary may be expanded while the cavity boundary is expanded, or the halo boundary may be reduced while the cavity boundary is reduced.
Preferably, in this embodiment, the cavity boundary and the halo boundary of the light beam after being converted by the lens are not limited, for example, as shown in fig. 13, the halo boundary 131a of the light beam after being converted by one of the shaping lenses does not overlap with the halo boundary 131b of the light beam after being converted by an adjacent shaping lens, so as to avoid the problem of inaccurate reduction of the light beam due to the overlapping between adjacent light beams.
On the basis of the above embodiments, the inventor considers that the light is generally linearly polarized + circularly polarized, and the linearly polarized light has an influence on the conversion of the light, so in this embodiment, a display module is provided, further including a brightness enhancement film, as shown in fig. 14, for filtering the linearly polarized light by disposing the brightness enhancement film 141 on the side of the first phase plate far away from the second phase plate.
The brightening film can comprise at least one of cholesteric liquid crystal and rod-shaped liquid crystal doped with chiral molecules, and can enable natural light to be transmitted to be left-handed or right-handed circularly polarized light, namely impurity light-linear polarization is eliminated.
Furthermore, in the embodiment of the present invention, the light shielding member is taken as an example of a pixel on the array substrate, and the arrangement position and the function of each component in the display module provided by the present invention are introduced, as shown in fig. 15, when adjacent pixels are a red pixel, a green pixel and a blue pixel in sequence, because the widths of the pixels with different colors on the display panel are different, as shown in the figure, the width d5 of the red pixel is greater than the width d6 of the blue pixel and is greater than the width d7 of the green pixel. As mentioned above, the hollow of the light beam converted by the first phase plate does not intersect with the light shielding component, so that in this embodiment, the topological load of one first phase adjusting unit needs to be different from the topological load of the adjacent first phase adjusting unit. That is, the topological charge of the first phase adjusting unit 151 corresponding to the red pixel is different from the topological charge of the first phase adjusting unit 152 corresponding to the blue pixel and the topological charge of the first phase adjusting unit 153 corresponding to the green pixel, so that the void of the light beam converted by each first phase adjusting unit is not overlapped with the boundary of the pixel corresponding to the first phase adjusting unit.
Accordingly, as described above, the phase plate can achieve phase advancing or phase retarding of light passing through the region compared to light passing through the non-plating region by different thicknesses and refractive indexes, thereby forming a light beam having a hollow center. Therefore, in the embodiment, since the widths of the sub-pixels are different, that is, the hole boundaries of the light beams passing through the sub-pixels are required to be different, in the display module provided in the embodiment, the thickness of one first phase adjustment unit is different from the thickness of the adjacent first phase adjustment unit. Or the refractive index of one first phase adjusting unit is different from the refractive index of the adjacent first phase adjusting unit.
In combination with the above, in the embodiment of the present invention, the light shielding component may be a pixel of any color, and may also be one or more components in the pixel, specifically, the pixel at least includes one or more layers of a light emitting device layer and an array layer, the light emitting device layer includes an anode, a cathode, and a light emitting layer located between the anode and the cathode, and the array layer includes one or more of a gate, a source, a drain, an active layer, and a trace.
Referring to fig. 16, fig. 16 is a cross-sectional view of a pixel according to an embodiment of the invention, in which the light emitting device layer includes a plurality of light emitting devices 161, and the array layer includes a plurality of thin film transistors T. The anode 163 of each light emitting device is connected to one drain 161d of the thin film transistor T. The cathode 162 is located above the anode 163 or between the anode 163 and the thin film transistor T, and in this embodiment, the cathode 162 is located above the anode 163 for example. The thin film transistor T includes an active layer 161a, a gate electrode 161b, a source electrode 161c, a drain electrode 161d, a gate insulating layer 161e disposed between the active layer 161a and the gate electrode 161b, and an interlayer insulating layer 161f disposed between the gate electrode 161b and the source and drain electrodes 161c and 161 d. The source 161c and the drain 161d are located in the same layer, i.e., a source-drain metal layer.
In this embodiment, the array layer and the light emitting device layer include a plurality of metal components, such as a gate, an anode, a cathode, and the like, but the light shielding component provided in the embodiment of the present invention may be any metal component.
On the basis of the above embodiments, an embodiment of the present invention further provides an electronic device, as shown in fig. 17, including any one of the above display modules. In addition, the electronic device further includes: and an optical component, such as a camera and a fingerprint sensor, disposed on a side of the second phase plate away from the first phase plate, in this embodiment, taking the optical component as the camera as an example, a projection of the camera on the second phase plate is located in the second phase plate. This electronic equipment's theory of operation is the same with above-mentioned display module's theory of operation, be at first through first phase place board with the light beam conversion have hollow light beam, then behind light shield part, will have hollow light beam conversion to former light beam through the second phase place board, use former light beam on devices such as camera, namely, in this electronic equipment, need not to increase the interval between the adjacent pixel, can realize the conduction of light, compare in correlation technique, this electronic equipment can improve display panel's display effect, can improve the imaging quality of camera again. The electronic device includes, but is not limited to, a mobile phone, a tablet computer, a digital camera, and the like.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A display module, comprising:
a first phase plate including a plurality of first phase adjusting units;
a second phase plate including a plurality of second phase adjustment units provided corresponding to the first phase adjustment units;
and a light shielding member disposed between the first phase adjustment unit and the second phase adjustment unit, wherein neither the topological charge of the first phase adjustment unit nor the topological charge of the second phase adjustment unit is zero, and the sum of the topological charge of the first phase adjustment unit and the topological charge of the second phase adjustment unit corresponding to the first phase adjustment unit is zero.
2. The display module of claim 1,
the hollow holes formed by the light beams converted by the first phase plate do not overlap with the light shielding component when passing through the light shielding component.
3. The display module of claim 1, further comprising:
and the shaping lens is arranged between the first phase adjusting unit and the light shielding component and is used for adjusting the cavity boundary and the halo boundary of the light beam converted by the first phase adjusting unit.
4. The display module of claim 1, further comprising:
the brightness enhancement film is positioned on one side, far away from the second phase plate, of the first phase plate and used for filtering linearly polarized light.
5. The display module of claim 1,
the topological load of one first phase adjusting unit is different from the topological load of the adjacent first phase adjusting unit.
6. The display module of claim 3,
the halo boundary of the light beam converted by one shaping lens does not overlap with the halo boundary of the light beam converted by the adjacent shaping lens.
7. The display module of claim 1,
the thickness of one first phase adjusting unit is different from the thickness of the adjacent first phase adjusting unit.
8. The display module of claim 1,
the refractive index of one first phase adjustment unit is different from the refractive index of the adjacent first phase adjustment unit.
9. The display module of claim 1,
the light shielding component is one or more components in pixels of any color, the pixels at least comprise one or more layers of a light emitting device layer and an array layer, the light emitting device layer comprises an anode, a cathode and a light emitting layer positioned between the anode and the cathode, and the array layer comprises one or more of a grid, a source, a drain, an active layer and a wiring.
10. An electronic device, comprising the display module according to any one of claims 1 to 9.
11. The electronic device of claim 10, further comprising:
the camera is arranged on one side, far away from the first phase plate, of the second phase plate, and the projection of the camera on the second phase plate is located in the second phase plate.
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CN113055560A (en) * 2020-10-19 2021-06-29 上海鲲游科技有限公司 Optical system for realizing under-screen camera and manufacturing method thereof
CN113055560B (en) * 2020-10-19 2023-12-19 上海鲲游科技有限公司 Optical system for realizing under-screen camera and manufacturing method thereof

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